Mi i i ilji i i



(Model.) 2 Sheets-Sheet 1.

0 SCHMIDT 8v C. LOEFFEL. LOOK.

No. PatentedA 11. 29, 189Q.

(Model.) 2 Sheets-Sheet 2.

O. SCHMIDT 8v C. LOBFPEL.

LOCK.

UNITED STATES PATENT EEICE.

OTTO SCHMIDT AND CHRISTIAN LOEFFEL, OF CHICAGO, ILLINOIS.

LOCK.

SPECIFICATION forming part Of Letters Patent No. 426,866, dated April29, 1890.

Application filed September 19, 1889, Serial No. 324,450. (Model.)

To @ZZ whom it may concern:

Be it known that we, OTTO SCHMIDT and CHRISTIAN LOEEEEL, subjects of theEmperor of Germany, residing at Chicago, in the county of Cook and Stateof Illinois,have invented certain new and useful Improvements in Locks,of which the following is a specification.

vThis invention relates to new and useful improvements in locks whichmay be applied to almost any kind of a door, but is especially adaptedand designed to be used on freightcar doors-and for locking trunks; andit consists in certain peculiarities of the construction andarrangements of the different parts of the same, as will be hereinaftermore fully set forth and specifically claimed.

In order to enable others skilled in the art to which our inventionpertains to make and use the same, we will noT proceed to describe it,referring to the accompanying drawings, in which- Figure 1 is afragmental side elevation of a freight-car, showing the lock attached tothe door thereof. Fig. 2 is a cross-section of the same, taken on line 22. Fig. 3 is a side elevation of a trunk, showing the lock in place.

Fig. 4 is a face view of the lock with the covering-plate removed,showing it as used on a car-door or trunk. Fig. 5 is a horizontalcrosssection taken on line 5 5 of Fig. 4. Fig. 6 is a face of the lockwith the bolt projected as used for an ordinary door. Fig. 7 is a faceView of the same with the covering-plate removed. Fig. S is a similarview with the inner plate removed and showing the interior of the lock.Fig. 9 is a View showing the bolt partially projected; Fig. 10, a viewshowing the bolt retracted. Fig. 11 is a vertical cross- Sectional View,and Fig. 12 is a horizontal cross-section of the lock.

In the several figures of the drawings, 1 is an ordinary sliding door ofa car.

2 is a portion of the body of the car.

3 3 are eyebolts, which are screwed into the car-body, one above and theother beneath the door, as shown in Fig. 1.

4 is a rod having at each end a hook to engage in the eyebolts.

5 5 are the hooks on the ends of the rods.

6 6 are straps for securing the rod to the door, each of which has onits free end a collar 7, through which the rod passes and is free t0turn.

8 is the casing of the lock.

9 is the socket secured to the jamb of a door or the body of the trunkor car with which the bolt engages. I

10 is the bolt. 11 is a yoke constituting a portion of the bolt.

12 is a lug on the case and nts in the yoke or slot to retain the boltin position, so that it can be projected or retracted by turning thekey.

13 is a lug on the upper surface of the yoke for engagement with the.tumblers 14 and 15 are tumblers pivoted at one end, as at 16, and heldagainst the lug 13 by means of the spring 17, which spring is secured toa pin 1S on the casing of the lock. The tumblers are preferably made ofabout the saine size and formed with a longitudinal slot having on oneor both sides of the slot recesses 19 for the engagement of the lug 13,as is shown in Figs. 8, 9, and 10, and will be clearly understood. Thelower portion of the yoke is formed'with anumber of recesses, as shownat 2O by the dotted lines.

21 is a shank or pin, over which the key for operating the bolt fits.

22 is a spring secured at one end to the casing and havinga hole at itsother end, through which pin 21 projects.

42 is a guide-piece secured to the casing, and fits loosely. over thebolt to retain it in place, yet to allow it to slide freely backward andforward. f

38 is an interior plate',- secured within they casing so as to restabove the parts just described and to hold them in place, as well as toprotect them from dust, (itc. surface of plate 23 are secured two pins24,

-which project slightly through each side of To the upper,

IOO

leave the pins exposed, so as to prick the hand of any one tamperingwith the lock.

On the outside of the covering-plate 27, and over the key-hole therein,is hinged a lid 28, which has on its free end a catch 29, which, whenpressed down, enters a hole 30 in plate 27 and engages a spring 31,which spring is secured at one end to a pin 32 on the interior plate 23and having its other end projecting past and pressing against a pin 32,which is loosely secured in the end of the casing and projects throughtill flush with the outside thereof. As will be seen in Fig. 7, this pinis provided with a shoulder to prevent it being displaced or pressed outtoo far. It is also clear that by pressing against the outer end of thepin it will release the catch on the hinged lid and the springthereunder will throw the lid in the position shown by dotted lines inFig. 12, when the key maybe inserted and the door unlocked. The objectof this lid is to prevent dust and other particles collecting in thecasing of the lock, and, when the lock is used on cars, to prevent watergetting in the casing and forming into ice.

In Fig. 5 is shown the socket 9 or hasp for the bolt, and it will beseen that in this ligure it passes through the casing, which is providedwith a suitable hole for this purpose, and that the other end of thesocket-bolt is provided with screw-threads and nut, so that it may besecured to the body of the car or trunk. In the iigures showin g thelock when designed to be used on a house-door the ordinary socket incommon use maybe applied to the jamb of the door for engagement with thebolt, which in this case extends entirely through the casing, as shown.

By reference to Fig. 1 of the drawings it will be seen that the door islocked in three placesthat is, at the top and bottoni-by means of hookson the rod, which is a part of the lock, and at the middle bythe lockitself. In this construction the rod is rigidly secured to the casing ofthe lock, but movably re tained on the door by means of the straps G,having the collars 7 ,which iit around the rod, as is obvious.

By taking the lock bythe handle 34#1 on the face-plate of the casing anddrawing the lock back till at about a right angle with the door thehooks on the ends of the rod will be disengaged and the door unlocked.To lock the door, it is only necessary to reverse this operation.

The operation of the lock when used without the rod is as follows: Thepin 32 is pressed inward, thereby releasing the catch 29 from the spring31, when the lid 28 is thrown outward by the spring 33 and the key-hole35 eX- posed. The key is then inserted in the hole and over the shank21, when it will rest on the spring 22, which spring presses upwardagainst the key-hole in the interior plate and will stop the key at thispoint unless more pressure is used, when the spring will yield and allowthe bits on the key to engage with the tuniblers and recesses in theyoke of the bolt. By turning the key once around the position of thebolt shown in Fig. 9 will be attained and that shown in Fig. 8 by againturning it. To retract the bolt, the reverse of this operation isemployed. To prevent the lock being unlocked by one unfamiliar with itor being picked is the main object of the spring.22,whieh presses npagainst the under side of the interior plate and stops the key-holetherein. It will therefore be understood that one not familiar with thelock would insert the key till it stopped by reason of the resistance ofthe spring, and would turn it on the top of the interior plate withouteffect or resistance, except that of the spring 3', which is secured tothe casing, as shown, for the purpose of deceiving the person tamperingwith the lock.

,Having thus fully described our invention, what. we claim as new, anddesire to secure by Letters Patent, is

1. In a lock, the combination of the casing having the lug12 andguide-piece 42,with the bolt 10, having the yoke 11 and recesses 20, thetumblers 14E and 15, having the recessed slots, as at 19,the springs 17and 22, the shank 21, and socket 9, all constructed, arranged, andoperating substantially as shown and described, and for the purpose setforth.

,2. In a lock, the combination of a casing containing a lock mechanismwith the pins 24, collars 25, and springs 26, substantially as and forthe purpose set forth.

In witness whereof we have hereunto set our hands and ai'lixed our sealsthis 14th day of September, 1889.

OTTO SCHMIDT. CHRISTIAN LOEFFEL.

In presence of-- Crans. C. TILLMAN, D. A. RAY.

[t: il

I OO

